This document introduces the query and setting methods, timing mode, technical parameters, troubleshooting methods, system connection, and indicator lights and buttons of the PJRC-I solar street light controller. The controller has both light control and time control functions, and is controlled by a microcontroller with SOC battery management system. It can intelligently sense the external light intensity, automatically turn on the lighting when it gets dark, and automatically turn off the lighting at the set time or when it gets bright. At the same time, it can also manage the charging and discharging of the battery, protect the battery, and prevent accidental damage to the controller.